tests: factor out base nginx-proxy config

test/test_nominal/test_nominal.yml

@@ -6,6 +6,10 @@ networks:
         - subnet: fd00:1::/80
 
 services:
+  nginx-proxy:
+    networks:
+      - net1
+
   web1:
     image: web
     expose:
@@ -25,10 +29,3 @@ services:
       VIRTUAL_HOST: web2.nginx-proxy.tld
     networks:
       - net1
-
-  sut:
-    image: nginxproxy/nginx-proxy:test
-    volumes:
-      - /var/run/docker.sock:/tmp/docker.sock:ro
-    networks:
-      - net1